Home / 428-682.50

Finding the Third Proportional to 428 and 682.50

Calculator

Solution

The third proportional to 428 and 682.50 is: 1,088.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    428 : 682.50 = 682.50 : x
  2. Step 2: Convert to fraction form
    428/682.50 = 682.50/x
  3. Step 3: Cross multiply
    428x = 682.50 × 682.50
  4. Step 4: Simplify right side
    428x = 465,806.25
  5. Step 5: Solve for x
    x = 465,806.25/428
  6. Step 6: Final answer
    x = 1,088.33

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.